The engine twiddlers at Porsche tuning shop 9ff have already created a tuning kit that boosts the Carrera GT's power into the 900 hp range, and have brought a 911 to speeds in excess of 241 mph. To satisfy the little people (always the altruists, them) the wizards of Dormund worked up a new manner of new engine kit for pedestrian 911 Turboistas and the cars they treat like Euro Disney on the autobahn. The top-spec kit increases the 997 Turbo's peak horsepower all the way to 640. This Stage III package brings the Tub to 60 mph in 3.5 seconds, 125 in 10.7 sec and 213 mph in however long that'll take. Not enough? Opt for the 720 hp Sportmotor.